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aquarat_50263
0,2,6,12,20, ____
[ "25", "28", "30", "26", "35" ]
C. 30
aquarat
mmlu_train_93347
During winter, the white fur of an arctic fox blends in with the snow. This adaptation is called
[ "hibernation", "migration", "camouflage", "movement" ]
C. camouflage
mmlu_train
aquarat_49380
A is half good a work man as B and together they finish a job in 18 days. In how many days working alone B finish the job?
[ "27 days", "21 days", "17 days", "18 days", "19 days" ]
A. 27 days
aquarat
arc_easy_1760
What would be the result of adding one proton to an atom?
[ "one electron would be added", "the atomic number would change", "the total mass of the atom would decrease", "the electrical charge would become neutral" ]
B. the atomic number would change
arc_easy
mmlu_train_87686
Every minute,someone is setting up an Internet company somewhere, in the worlD. Each one is searching for the one great idea that could make his web company click in a big way.And they are trying all kinds of tricks to attract people towards their websites.While some websites offer sounds,cartoons and amazing photos on screen to make their sites almost a movie-like experience for the viewers,others provide free downloads and competitions. A company in California,US,has decided to offer online smells to people who visit its website. That is,if a pizza image comes on screen,your nose will catch the smell of bread and cheese!All you need to do is to connect a device called"iSmell"with your computer.This smart little device contains some chemicals that can create different kinds of smells. The company has invented software that changes the chemical composition of different smells into digital signals .An onscreen image,which is programmed with the proper digital signal,will start the"iSmell" device.The device will use the software to change' the digital signal again and let go of the correct smell.This device reads the digital smell code from the website and creates the proper smell from its store of chemicals.This smell is then made to blow softly in the direction of the user with the support of a small fan. In order to let go of the correct smell,the company has created a"Scent Registry",which contains a digital index of thousands of smells.The company plans to allow website developers to integrate the proper smells in digital code to their games and images.The company is also hoping that Hollywood filmmakers will use the smell technology in their movies.Imagine audiences getting the smell of rocket fuel as a spacecraft takes off on the cinema screen!Of course,filmmakers will have to be careful not to shoot in dirty neighborhoods,which have a lot of rubbish lying arounD. Internet companies try their best to search for great ideas to _ .
[ "join in the Internet fever", "offer movie-like experience", "provide free downloads and contests", "attract people to their websites" ]
D. attract people to their websites
mmlu_train
aquarat_44639
the cyclist going at a constant rate of 18 miles per hour is passed by a motor-cyclist traveling in the same direction along the same path at 48 miles per hour. the motor-cyclist stops to wait for the cyclist 15 minutes after passing cyclist, while the cyclist continues to travel at constant rate, how many minutes must the motor-cyclist wait until the cyclist catches up?
[ "25", "30", "35", "40", "45" ]
A. 25
aquarat
arc_challenge_954
Which of these will most likely increase a plant population in a habitat?
[ "strong winds", "freezing temperatures", "fewer days of sunshine", "more days of rain showers" ]
D. more days of rain showers
arc_challenge
aquarat_6515
Sudhir started a business with Rs.10,000 and after 8 months Ravi joined him with Rs.60,000. If they get a profit of Rs.28000 then ratio of their shares will be
[ "1:2", "2:3", "4:3", "3:4", "3:5" ]
A. 1:2
aquarat
mmlu_train_2284
A decrease in air temperature from 60°F to 35°F would most likely cause a person to
[ "shiver", "sweat", "blink his eyes", "feel sleepy" ]
A. shiver
mmlu_train
mmlu_train_93278
Oxygen reacts with iron to produce rust and with hydrogen to produce water. Which statement describes both reactions?
[ "A different mixture is formed in each case.", "A different solution is formed in each case.", "Both a change of state and of elements is involved.", "New molecules are formed but the same elements exist." ]
D. New molecules are formed but the same elements exist.
mmlu_train
mmlu_train_78652
In our big city there are a lot of shops near the Department Store. They make a big shopping center and sell all kinds of things. You can always buy everything you want here. Here is a list (;) of big shops. NameTelephoneAddress Department Store41853051No.189 Yonghua Road Mobile Phone Store41653789No.67 Xiangyang Road Old Wang Shoemaker41861736No.180.Yonghua Road Shanghai Sweater Shop41615789No.75 Xiangyang Road Yiwu Shopping Market41836547No.190 Heping Road Zhiyuan Computer Company41653786No.68 Xiangyang Road Xiwang Toy Shop41586327No.195 Heping Road Yang Liuqing Painting Store41861861No.192.Yonghua Road How many big shops are on Yonghua Road?
[ "Eight.", "Three.", "Two.", "Six." ]
B. Three.
mmlu_train
aquarat_28152
If a randomly selected non-negative single digit integer is added to {2, 3, 6, 8}. What is the probability that the median of the set will increase but the range still remains the same?
[ "0.2", "0.3", "0.4", "0.5", "0.6" ]
C. 0.4
aquarat
mmlu_train_17327
"Mobile phone killed my man," screamed one headline last year. Also came claims that an unpublished study had found that mobile phones could cause memory loss. And a British newspaper devoted its front page to a picture supposedly showing how mobile phones could heat the brain. For anyone who uses a mobile phone, these are worrying times. But speak to the scientists whose work is the focus of these scares and you hear a different story. One of the oddest effects comes from the now famous"memory loss" study. Alan Preece and his colleagues at the University of Bristol placed a device that imitated the microwave radiation of mobile phones to the left ear of volunteers. The volunteers were good at recalling words and pictures they had been shown on a computer screen. Preece says he still can't comment on the effects of using a mobile phone for years on end. But he rules out the suggestion that mobile phones have an immediate effect on our cognitive abilities. "I'm pretty sure there is no effect on short-term memory," he says. Another expert, Tattersall, remarked that his latest findings have removed fears about memory loss. One result, for instance, suggests that nerve cell synapses exposed to microwaves become more -- rather than less -- receptive to undergoing changes linked to memory formation. An even happier outcome would be that microwaves turned out to be good for you. It sounds crazy, but a couple of years ago a team led by William Adey at the Veterans Affairs Medical Center in California found that mice exposed to microwaves for two hours a day were less likely to develop brain tumours when given a cancer-causing chemical. "If _ doesn't certainly cause cancer in animals and cells, then it probably isn't going to cause cancer in humans," says William. And while there's still no absolute evidence that mobile phone use does damage your memories or give you cancer, the conclusion is: don't be afraid. According to this passage, we can know that _ .
[ "the mobile phone is a most wonderful invention", "there's no need to worry about the radiation from mobile phones", "something must be done to stop people using mobile phones", "mobile phone companies shouldn't cheat customers" ]
B. there's no need to worry about the radiation from mobile phones
mmlu_train
aquarat_15216
Working simultaneously at their respective constant rates, machine A and B produces 20 widgets in c hours. Working alone at its constant rate, Machine A produces 20 widgets in 'a' hours.In terms of a and c, how many hours does it take Machine B, working alone at its constant rate, to produce 10 widgets
[ "ac/a+c", "2ac/a+c", "ac/2a+2c", "ac/2a-2c", "ac/2c-2a" ]
D. ac/2a-2c
aquarat
arc_challenge_806
When the first American astronauts were planning to walk on the Moon, they knew that the gravity on the Moon was less than the gravity on Earth. With this information, what did the astronauts expect to be most different on the Moon?
[ "their mass", "their height", "their weight", "their volume" ]
C. their weight
arc_challenge
m1_pref_291
Let $S$ be a random variable taking values in $\{a,b,c,d,e\}$ with the following probabilities. $$egin{array}{|c|c|c|c|c|c|} \hline & a & b & c & d & e \ \hline p_S(\cdot) & 1/3 & 1/3 & 1/9 & 1/9 & 1/9\ \hline \end{array}$$ Let $\Gamma_D$ be the $D$-ary Huffman code for $S$. Let $L(S,\Gamma_D)$ be the average codeword-length of $\Gamma_D$, and let $H_D(S)$ be the $D$-ary entropy of $S$. True or false: If $D=3$, then $L(S,\Gamma_D) = H_D(S)$.
[ "False", "True" ]
B. True
m1_pref
arc_challenge_669
Many products are made from trees. Which is the best way to manage the use of trees?
[ "cut down most of the trees from forests", "build more lumber mills", "reduce the amount of recycled paper", "plant a tree each time one is cut down" ]
D. plant a tree each time one is cut down
arc_challenge
mmlu_train_19814
Have you ever stayed up late? If so, you know that not getting enough sleep can leave you tired and grumpy . Not sleeping enough can also make it harder to think clearly the next day. Sleep experts have long known that getting a good night's sleep is important. It helps kids perform their best during the day. A recent study shows that sleep helps improve problem--- solving skills and creative thinking. For the study, two groups of volunteers answered a math problem. The group that slept for eight hours solved the problem correctly more often than the group that did not get enough sleep. While you sleep, your brain is busy doing its "homework". It sorts out information from your day. Getting enough sleep each night can _ your brainpower. That will help you do your best in school. Experts say that, in return, can lead to better grades. What did the results of a recent sleep study show?
[ "People who sleep enough are good at math", "Sleep is important for learning", "If you get enough sleep, you don't have to do your homework", "Adults need more sleep than kids" ]
B. Sleep is important for learning
mmlu_train
aquarat_45147
Find the missing value : 8597 - ? = 7429 - 4358
[ "5526", "5426", "5326", "5226", "None of them" ]
A. 5526
aquarat
mmlu_train_29807
How many words one uses cannot be measured exactly. However, Professor Seashore concluded the first- graders entered school with at least 24,000 words and add 5,000 each year so that they leave high school with at least 80,000. These figures( ) are for recognition vocabulary ,the words we understand when we read or hear them, which are more than our active( ) vocabulary, the words we use in speaking and writing. Using the words you recognize in reading will help get them into your active vocabulary. In your reading, pay attention to these words, especially when the subject is one that you might well write or talk about. Underline (draw a line under) or make a list of words that you feel a need for and look up the ones that you are not sure of in a dictionary. And then before very long you will find a way to use some of them. Once you know how they are pronounced and what they mean, you can safely use them. Prof. Seashore concluded that it takes a first -grader _ years to increase his vocabulary from 24,000 to 80,000.
[ "12", "10", "8", "5" ]
A. 12
mmlu_train
mmlu_train_94351
Which property of water allows it to dissolve many different substances?
[ "It is a polar molecule.", "It contains hydrogen atoms.", "It has a high melting point.", "It has a low density." ]
A. It is a polar molecule.
mmlu_train
aquarat_14273
The General Hospital is comprised of, 3/5 Pediatricians, 1/4 Surgeons, and the rest are GP doctors. If 1/4 of the Surgeons are Heart Surgeons, and the hospital doubles the number of GP doctors, what proportion of the hospital are now Heart Surgeons?
[ "2/5", "1/4", "1/2", "1/24", "1/25" ]
D. 1/24
aquarat
arc_easy_2100
Why is a healthy diet important?
[ "It maintains a constant body temperature.", "It prevents damage to internal organs.", "It makes oxygen for all the cells in the body.", "It supplies the body’s needs for growth and energy." ]
D. It supplies the body’s needs for growth and energy.
arc_easy
aquarat_23381
In a fuel station the service costs $1.65 per car, every liter of fuel costs 0.65$. Assuming that a company owns 12 cars and that every fuel tank contains 55 liters and they are all empty, how much money total will it cost to fuel all cars?
[ "320$", "380$", "420$", "448.8$", "480$" ]
D. 448.8$
aquarat
aquarat_445
If the length and breadth of a rectangular room are each increased by 1 m, then the area of floor is increased by 21 sq. m. If the length is creased by 1 m and breadth is decreased by 1m, then the area is decreased by 5 sq. m. The perimeter of the floor is:
[ "27", "35", "40", "49", "38" ]
C. 40
aquarat
aquarat_17841
Jason is 4 times older than Bob at present. 8 years ago Jason was 12 times older. How old are Jason?
[ "10", "11", "12", "13", "14" ]
B. 11
aquarat
aquarat_46440
John's Bank's saving amount is decreased 50% due to loan payment and current balance is Rs.50000. Find the actual balance before deduction?
[ "100000", "8500", "9000", "9500", "10000" ]
A. 100000
aquarat
mmlu_train_16403
The Five Rules for Keeping Fit Hi,there! I'm Crystal Collins and I'm very happy to share some time with you.So,you want to keep fit,huh? Well,you surely came to the right place.Together we can keep fit and healthy and succeed in doing that.It's easy.Everybody can do it,you hear? Just remember the five golden rules. Number one:Always wear comfortable clothes when you are exercising.You need to feel comfortable and relaxed . Number two:You should always do some warming--up exercise first,to get your body ready for the real thing. Number three:Never try to do too much exercise too soon.Take it nice and easy now,you hear ?There's no rush about this. Number four:Don't forget to relax for about five minutes when you've finished your exercise.You need to rest a little bit after you've been exercising. 1 And here is the golden rule number five.Stop at once if you feel any pain in your neck,head or any part of your body. Crystal Collins may most probably be _ .
[ "an artist", "a teacher", "a policewoman", "a scientist" ]
B. a teacher
mmlu_train
aquarat_47025
For any integer n greater than 1, n* denotes the product of all the integers from 1 to n, inclusive. How many prime numbers W are there between 6* + 2 and 6* + 6, inclusive?
[ "None", "One", "Two", "Three", "Four" ]
A. None
aquarat
arc_challenge_215
A student uses clay to build models of an ocean plate and a continental plate. What characteristic cannot be accurately represented by the models?
[ "the shapes of plates", "the relative sizes of plates", "the relative densities of plates", "the arrangement of plates relative to one another" ]
C. the relative densities of plates
arc_challenge
mmlu_train_48111
For years experts have argued that poor households are consuming less nourishing food than the rest of the population. But a survey of some of the lowest earners in Britain shows the nutritional value of what they eat is little different to everyone else. In fact, the same deficiencies in diet were shared by all the population and the findings suggest that poor eating choices are far more widespread than previously suspected - affecting many wealthier families. These included low fruit and vegetable consumption, not eating enough oily fish and eating too much saturated fat and sugar. "This is a large and significant study and it shows we are all eating just as bad a diet as each other," said Tim Lang, professor of food policy at City University. The poorest families were eating only slightly more sugar and slightly less fruit and vegetables, according to the study of 3,728 respondents in the bottom of the population. Alison Tedstone, head of nutritional science at the Food Standard Agency, said: " Overall, people on low incomes have less than ideal diets, but their diets are only slightly worse than those of the rest of the population." The study also showed that low earners are choosing to eat unhealthily. Their food choices were not linked to their income, their access to shops or their cooking skills. The findings appear to contradict assumptions that the poor cannot afford healthier foods or are too far away from shops that sell them. The Low Income Nutrition and Diet Survey showed that like the rest of the population, the poor's daily fruit and vegetable intake on average is below the recommended five portions. Fewer than 10 per cent of respondents hit this target, while around 20 per cent ate less than a portion per day. More than three quarters (76 per cent) of men and 81 per cent of women did less than one 30-minute session of moderate or vigorous exercise per week. Some 45 per cent of men and 40 per cent of women were smokers. This compares with 28 per cent of men and 24 per cent of women in the general population. According to the passage, which of the following is true?
[ "Whether the poor or the rich maybe have a bad diet.", "Even the poor can enjoy enough fruit and fish consumption.", "Only the poor have a bad diet.", "The study was conveyed in both the rich and the poor." ]
A. Whether the poor or the rich maybe have a bad diet.
mmlu_train
mmlu_train_46762
Do you have a sore throat, a running nose and a headache? Do you keep coughing and sneezing? If you do, the chances are that you have a cold or perhaps flu--- but which one? Although both colds and flu are caused by viruses, they are very different illnesses. Colds, which usually last about a week, affect the nose most. They commonly cause a runny nose and sneezing. Sometimes, they cause a headache, a cough and slightly aching muscles. Flu is much more serious illness and is caused by different group of viruses. People with flu usually get all the symptoms described above. However, they also get a high fever, a dry cough and much worse aching. Fever is one of the typical symptoms of the flu for all ages. The symptoms also last much longer. Sometimes they don't disappear for at least two weeks. Flu can be a deadly disease. The elderly, who are weaker and less healthy than most younger people, can die from flu. This is one reason why old people are advised to have a flu injection before the start of winter when flu is most common. This injection is inexpensive and definitely worth it. If you have a cold or flu, you must always deal with used tissues carefully. Don't leave dirty tissues on your desk or on the floor. Someone else has to pick these up and viruses could be passed on. And finally, remember to cover your nose and mouth when you sneeze!You don't want to see the small drop of liquids blown out of your nose and mouth when you sneeze, do you? Disgusting, eh? Now you can understand why it's a good idea to cover your nose and mouth when you sneeze! Which of the following statements is TRUE according to the passage?
[ "Both colds and flu last the same time.", "Both colds and flu can be prevented by injection.", "Both colds and flu are caused by the same viruses.", "Both colds and flu have an aching symptom." ]
D. Both colds and flu have an aching symptom.
mmlu_train
mmlu_train_94701
Which of the following heat exchange processes involves the collision of particles?
[ "insulation", "conduction", "convection", "radiation" ]
B. conduction
mmlu_train
mmlu_train_36532
Recovery from bulimia is difficult,but a beautiful journey!You'll come across many challenges--but once you've beaten them,the world will look much more beautiful. You can recover from this illness--I promise!Remember:If I recovered--you can too! I began throwing up when I was just a kid. Back then I didn't know why I did that. But now I can see that it was the result of my seeking so called fashionable diets. I was only 8 years old when my aunty phoned my mom saying that I'd thrown up my dinner.I told them it was just a party trick,and they ignored it. Their reaction made me realize that this "trick" of mine should be a secret. I would continue doing it,but would never let anyone know. As I got older,this secret habit got more and more serious,and this carried on for years. During my first year of university,at the age of 20,I wasted over $20,000 on food from the school dining hall. Finally,after having had bulimia for nearly 12 years,I decided enough was enough. I was close to death--I could feel it in every part of my body. I needed help,and I made an appointment with a counselor of my university. One year later,I graduated from university. I was proud of myself for getting my degree. But there was a deeper pride and strength inside my mind. I had beaten bulimia. It had been a long and difficult road--but I'd done it. Which of the following statements is TRUE?
[ "The author's bulimia didn't grow worse as she grew older.", "The author believed that nobody could beat bulimia completely.", "The author's bulimia helped her save money when at university.", "The author had beaten bulimia when she graduated from university." ]
D. The author had beaten bulimia when she graduated from university.
mmlu_train
mmlu_train_1155
Which statement describes animal embryos?
[ "display all the features of an adult", "represent the earliest stage of development", "have the same number of cells as a fertilized egg", "have half the number of chromosomes as an adult" ]
B. represent the earliest stage of development
mmlu_train
arc_easy_1716
A characteristic that all living organisms have in common is they
[ "need similar food.", "have the same life span.", "live in the same climate.", "are made of cells." ]
D. are made of cells.
arc_easy
mmlu_train_84212
There are more and more fast food chains all over the world now. Most of these places work on a similar principle .There is a long counter ,above which hangs a list(often with pictures)of the items they sell,and behind which several people (often students working for the lowest pay) are working. Buyers form queues in front of each assistant. You receive what you order and take it on a tray to a table. If you can't see any knives and forks, this means you should eat with your hands. If you can't see any straws ,that's because they are hiding in the straw machine and you have to press the button to get a straw. When you have finished, you yourself throw away everything except the tray. It seems that you should do almost everything while you are having food in this kind of restaurant. Many fast food places have drive-in facilities You place your order from your car through a microphone and then drive to a special window to pay and pick it up. You may even find places where a waitress brings your meal out, and you sit and eat it in the car from a tray hooked over the door through the open window. What do you think about this king of food-serving? Everything happens in seconds as well as your lunch or supper. You have no time to enjoy your meal because you are eating fast food. You can find these things in these restaurant EXCEPT
[ "a long counter", "a list of the items they sell", "some students in front of the counter", "a straw machine" ]
C. some students in front of the counter
mmlu_train
aquarat_52126
Three people candidates contested an election and they received 1136, 7636 and 11628 votes respectively. What is the percentage of the total votes did the winning candidate get?
[ "40%", "45%", "57%", "58%", "60%" ]
C. 57%
aquarat
aquarat_45670
If nn is a positive integer and (n+1)(n+3)(n+1)(n+3) is odd, then (n+2)(n+4)(n+2)(n+4) must be a multiple of which one of the following?
[ "5", "7", "6", "8", "9" ]
D. 8
aquarat
mmlu_train_96726
A person wants to find chloroplasts in great amounts, so they check
[ "stems", "buds", "extended portions", "dry seeds" ]
C. extended portions
mmlu_train
mmlu_train_58902
Who is smarter? A human being or artificial intelligence ? The question swept the world last week when a Google-developed program called AlphaGo defeated the world top player, South Korean Lee Se-del, 4-1. So, what comes next? Some people have been arguing that artificial intelligence, or AI in short, will be a bad thing for humans. In an interview with the BBC in 2014, UK scientist Stephen Hawking warned that "the development of full artificial intelligence could mean the end of the human race." So are we really about to live in the world shown in the Terminator movies? "Not quite," answered The Economist. After all, it's not hard to get a computer program to remember and produce facts. What is hard is getting computers to use their knowledge in everyday situations. "We think that, for the human being, things like sight and balance , are natural and ordinary in our life." Thomas Edison, founder of Motion Figures, a company that is bringing AI to boys, told the newspaper. "But for a robot, to walk up and down just like human beings requires various decisions to be made every second, and it's really difficult to do." As The Economist put it, "We have a long way to go before AI can truly begin to be similar to the human brain, even though the technology can be great." Meanwhile, John Markoff of The New York Times said that researchers should build artificial intelligence to make people more effective. "Our fate is in our own hands," he wrote. "Since technology depends on the values of its creators, we can make human choices that use technology to improve the world.".Com] Who believes much has to be done to improve AI?
[ "Stephen Hawking.", "John Markoff.", "The New York Times.", "The Economist." ]
D. The Economist.
mmlu_train
mmlu_train_33868
IELTS: international English language testing system Introduction: The IELTS is jointly managed by the University of Cambridge Local Examination Syndicate , the British Council and IDP Education Australia Why more and more people are taking the IELTS test? The IELTS test is widely recognized by the colleges, universities and other academic institutions of Australia, New Zealand, Canada and the United Kingdom. More and more universities and colleges in the US are also accepting an IELTS result as a language requirement for application to degree courses. IELTS is accepted by many important organizations, such as the New Zealand Immigration Bureau, the Australian Immigration and Cultural Department, the Canadian Immigration Bureau, the Australian Medical Council and the British Medical Association . Choice of two test types There are two test models: Academic and General Training. The candidate must select the one suitable to his/here purpose for taking the test. Academic: for candidates who want to apply for undergraduate or postgraduate courses. General Training: for candidates who take IELTS for immigration purpose, training programmes, or work experience. If you have any questions about which type to take, consult the Examinations Services staff at the British Council offices. Content The test is composed of four papers: Listening, Reading, Writing and Speaking. The first three papers must be taken at one sitting on one day, and the speaking paper may be taken up to two days later. Usually in China, the Listening paper is taken on a Saturday morning, followed by the Reading paper, and then Writing paper. The Speaking test is usually taken on the Saturday afternoon or on the following Saturday. Candidates must complete all four papers in order to obtain an overall score. How many organizations is IELTS managed by?
[ "6.", "5.", "4.", "3." ]
D. 3.
mmlu_train
arc_easy_670
During winter, the white fur of an arctic fox blends in with the snow. This adaptation is called
[ "hibernation", "migration", "camouflage", "movement" ]
C. camouflage
arc_easy
mmlu_train_97791
All things which are alive will require this at some point or at many points during its existence:
[ "coats", "droplets", "sand", "bugs" ]
B. droplets
mmlu_train
aquarat_14845
A cycle is bought for Rs.840 and sold for Rs.1220, find the gain percent?
[ "70%", "45%", "48%", "30%", "40%" ]
B. 45%
aquarat
mmlu_train_61707
"The world's oceans are slowly getting more acidic." say scientists. The researchers from California report that the change is taking place in response to higher levels of carbon dioxide in the atmosphere. The lowering of the waters' PH value is not great at the moment but could cause a serious threat to current ocean life if it continues, they warn. Ken Caldeira and Michael Wickett, from the Lawrence Livermore National Laboratory, report their concerns in the journal Nature. Increasing use of oil fuels means more carbon dioxide is going into the air, and most of it will eventually be absorbed by seawater. Once in the water, it reacts to form carbonic acid. Scientists believe that the oceans have already become slightly more acidic over the last century. These researchers have tried to predict what will happen in the future by combining what we know about the history of the oceans with computer models of climate change. "This level of acidity will get much more extreme in the future if we continue releasing CO2into the atmosphere," said Dr Caldeira. "And we predict the amount of future acidity will exceed anything we have seen over the last several hundred million years." However, it is not ly clear what that means for ocean life. Most organisms live near the surface, where the greatest PH change would be expected to occur, but deep-ocean life forms may be more sensitive to PH changes.Coral reefs and other organisms whose shells contain calcium carbonate may be affected if the water's acidity levels keep going up, the team predict. In recent years some people have suggested storing carbon dioxide from power stations in the deep ocean as a way of dealing with global warming.But Dr Caldeira said that such a strategy should now be re-considered. "Previously, most experts had looked at ocean absorption of carbon dioxide as a good thingbecause in releasing CO2into the atmosphere we warm the planet, and when CO2, is absorbed by the ocean, it reduces the amount of greenhouse warming." The ocean is becoming more acidic due to _ .
[ "the lower water PH value", "the warming atmosphere", "the higher level of CO2in the air", "the increasing use of fuels" ]
C. the higher level of CO2in the air
mmlu_train
mmlu_train_37085
Shelly Nielsen sees students fall asleep in class at least twice a week. "When I see teens asleep in my class, I wonder if I am really that boring", said Nielsen, a teacher. "I also wonder why they are so tired." Neilson first tried to wake up sleeping students quietly. If the snoozing continues, she may call a student's parents to find out how much sleep the students is getting at night and why. According to a research, teens need at least nine hours of sleep to function properly during the day. And more than 90 percent of teens say they are sleeping less than that each night. "The big problem is the social demand for homework, video games and friends. Teens don't understand how important sleep is." said Dr. Carl Lawyer, a specialist. Rebecca Lucas, another teacher agrees. "Teens are busy," she said, " many activities force them to get home pretty late. When I see teens sleeping in my class, I feel sad. I also feel frustrated because I have so much to teach in such a short amount of time and teens sleeping in the class slows me down." Al Taylor, a teacher says sleeping is not allowed in his class. "When I see a teen sleeping in my class, I feel bad that they didn't get enough sleep but they need to correct it at home," Taylor said. "I've raised teenage boys myself. Teenagers like to wait to the last minute to do their homework so that they often stay up late trying to finish it." What is the main idea of the passage?
[ "Why sleep is important", "Why teens are so tired", "How students get enough sleep", "How teachers managesleeping students" ]
B. Why teens are so tired
mmlu_train
aquarat_42391
Average age of students of an adult school is 46 years. 120 new students whose average age is 32 years joined the school. As a result the average age is decreased by 4 years. Find the number of students of the school after joining of the new students.
[ "1200", "120", "360", "168", "None of these" ]
D. 168
aquarat
mmlu_train_32283
Directions : Read the following three passages. Each passage is followed by several questions or unfinished statements. For each of them there are 4 choices marked A,B, C and D. Choose the one that fits best according to the information given in the passage When top engineers in Germany wanted to build a more energy-efficient car, they headed to the natural history museum to study dolphins and sharks. But it was the boxfish that interested them. "We were surprised when this clumsy-looking fish became our model for designing an aerodynamic car",says Thomas Weber. He is the research and development chief for the car company Daimler. An aerodynamic design reduces wind drag and increases fuel efficiency. The boxfish may look clumsy, but it can start, stop ,back up and zigzag through the water with ease. And it does all this using surprisingly little energy. Daimler's bionic car is modeled on the fish's boxy skeletal system. Like the fish, the car is fast and drives easily. It's efficient too. The science behind nature-inspired inventions is called biomimicry . Biologist Janine Benyus came up with the term. As co-founder of the Biomimicry Guild, she has worked with cereal companies,sneaker designers and others to develop products based on Nature's best ideas. This month ,the Nature's 100 Best List will be revealed at the World Conservation Congress in Barcelona ,Spain. Benyus co-authored the list of nature inspired designs with economist Gunter Pauli. In Zimbabwe ,a country in southern Africa ,engineers designed energy-efficient buildings modeled on termite mounds . The buildings use vents to keep the air flowing and the temperature cool. A company in Atlanta ,US ,developed a self-cleaning paint modeled on the lotus leaf. When the paint dries ,it becomes bumpy ,just like the lotus leaf. Rain drops form on the bumps and roll off ,carrying dirt along with them. Nature has done billions of years of research. Only the best-designed products have survived. Companies owe Mother Nature a debt for all that hard work ,says Benyus. For scientists and inventors, the possibilities for copying nature are limitless. Technology may never be as efficient as nature, or as color1ful. But that doesn 't mean we should stop trying to learn from the world around us. Take a walk outside. Watch a squirrel climb up a tree. Look closely at the veins of a leaf. Hear the birds chirping in the trees. Such small details may help solve big problems in the future. Which is TRUE according to the passage?
[ "In America a self-cleaning paint was modeled on the lotus flower.", "Zimbabwe engineers learned from termites to create highly advanced heating systems.", "After the boxfish ,many other ideas of new products are borrowed from nature.", "Nature is a good source to turn to for improving technology." ]
D. Nature is a good source to turn to for improving technology.
mmlu_train
mmlu_train_18770
While there has been public debate about whether running is good for your health for a long time, experts agree that running has more benefits than the costs. Some people are concerned that the pressure on your knees and ankles can be _ . While this can be true, there are many things that you can do to reduce your risk of injury. You should always go to a doctor for advice before you begin any type of exercise program. Then, a good pair of running shoes can be helpful as your feet hit the ground. They will help protect your ankles by providing stability to your feet. So it is good idea to visit a specialty running shoe store. The staff there can suggest shoes which are ideal for your running style. In order to learn the proper form, you may get some advice from a friend who has been running for some time, or even join a running club. They can provide good tips as well as some support and encouragement for you. Lastly, it is important to start out slowly. When it comes to getting in shape and losing weight , short bursts of speed followed by periods of slower movement would be proper. Aim for around 30 minutes of exercise a few days a week. As you get better, you can increase your speed. Always allow your body to rest in between heavy exercise as your muscles need time to bring energy back. Follow these instructions and your running experience will be a great one! In the expert's opinion, _ .
[ "running is good for your health as well as your mind.", "you should buy running shoes in an expensive store.", "running has more advantages than disadvantages for you.", "you should go to the doctor if you have a running injury" ]
C. running has more advantages than disadvantages for you.
mmlu_train
mmlu_train_29437
New research shows how kids' brains reorganize as they learn math. All the time you spent memorizing multiplication tables may have made you a better mathematician, according to a new study. A team of scientists from Stanford University, in California, have shown how the brain reorganizes itself as kids learn math. After a certain amount of time spent practicing math, kids can put away the calculator . They don't even need to count on their fingers. They simply know the answers to subtraction , addition, and multiplication facts. The quicker kids can recall basic math facts, the easier it is for them to solve more complicated math problems. The Stanford University researchers observed the brain activity of 28 students aged 7to 9 for the study. They took scans of the students' brains as the students solved math calculations without the help of a calculator, pen or paper. A calculation--three plus four equals seven, for example--flashed on a screen. The students pushed a button to say if the answer was right or wrong. The scientists also recorded the response speed, and what parts of the brain became active as the kids pushed the button. These observations showed a process called fact retrieval . Rather than using their fingers to count, or writing out answers on a piece of paper, the students pulled the answers from memory. It's as if the answers to basic math problems are kept in a long-term storage area in the brain, which was built from repetition. "Experience really does matter," said Dr. Kathy Mann Koepeke. Children make the shift from counting to fact retrieval when they are 8 to 9 years old, the study shows. This is the time when most students are learning basic addition and subtraction. When kids have basic math facts memorized, the brain has more free space to learn more complicated math. This process has benefits for the future. The study shows as kids grow older, their answers rely more on memory and become quicker and more accurate. Less brain activity is devoted to counting. Some children make this shift quicker than others. What did the researchers do when students worked out the given problems?
[ "They recorded the students' brain activities.", "They pushed a button linked to the students.", "They noticed whether they used a calculator.", "They found out who responded most quickly." ]
A. They recorded the students' brain activities.
mmlu_train
mmlu_train_40731
More than four decades ago British scientist Robert Edwards first witnessed the miracle of human life growing inside a test tube at his Cambridge lab. Since that ground-breaking moment, more than four million babies have been born through IVF and in 2010 his great contribution to science was finally recognized as he was awarded the Nobel Prize for medicine. The prize for Dr Edwards, who was given a Daily Mirror Pride of Britain Award in 2008, includes a PS900,000 cheque. The Nobel Assembly described IVF as a "milestone in modern medicine". With the help of fellow scientist Patrick Steptoe, the Manchester-born physiologist developed IVF -- leading to the birth of the world's first test tube baby. Dr Steptoe died 10 years later but their work has transformed fertility treatment and given hope to millions of couples. It was a scientific breakthrough that transformed the lives of millions of couples. They said: "His achievements have made it possible to treat infertility, a disease which makes human unable to have a baby. This condition has been afflicting a large percentage of mankind including more than 10% of all couples worldwide." Louise Brown, the world's first test tube baby, made international headlines when she was born in Oldham, Gtr Manchester, in 1978 to parents Lesley and John who had been fruitlessly trying for a baby since 1969. Ivf-in-vitro fertilisation is the process whereby egg cells are fertilised outside the body before being implanted in the womb. After a cycle of IVF, the probability of a couple with infertility problems having a baby is one in five -- the same as healthy couples who conceive naturally. Professor Edwards, who has five daughters and 11 grandchildren, began his research at Cambridge University in 1963, after receiving his PhD in 1955.He once said: "The most important thing in life is having a child. Nothing is more special than a child." With the help of fellow scientist Patrick Steptoe, Prof. Edwards founded the Bourn Hall clinic in Cambridge shire, which now treats more than 900 women a year. Each year, more than 30,000 women in Britain now undergo IVF and 11,000 babies are born as a result of the treatment. But his work attracted widespread criticism from some scientists and the Catholic Church who said it was "unethical and immoral". Martin Johnson, professor of reproductive sciences at the University of Cambridge, said the award was "long overdue". He said: "We couldn't understand why the Nobel has come so late but he is delighted -- this is the cherry on the cake for him." Professor Edwards was too ill to give interviews but a statement released by his family said he was "thrilled and delighted". What is Robert Edwards' contribution to science?
[ "Challenging a disease which stops human having a baby.", "Seeing the wonder of the first tube baby growing.", "Enabling millions of couples to live a better life.", "Helping couples with infertility to have tube babies." ]
D. Helping couples with infertility to have tube babies.
mmlu_train
aquarat_44335
There are 18 balls in a box: 10 balls are green, 6 are blue and 2 are white. Then 1 green and 1 blue balls are taken from the box and put away. What is the probability that a blue ball is selected at random from the box?
[ "5/16", "4/13", "3/13", "5/13", "6/13" ]
A. 5/16
aquarat
mmlu_train_15952
High in the sky, a group of birds fly past. The 5-foot-tall creatures are whooping cranes, the tallest birds in North America noted for its loud call. The wild animals appear to be following much larger birds. But those aren't birds at all. They are three-wheeled aircraft called trikes , and the pilots flying them are wearing white helmets and white gowns. That plan might sound like a stupid idea, but it's not. The pilots are from an organization called Operation Migration. They are helping the whooping cranes learn to migrate, or move from one area to another when the seasons change. The cranes are endangered. In 1941,the species had dwindled to roughly 20 birds because of hunting and habitat loss. US wildlife officials counted 149 whooping cranes in November 1995,the most since the American government began taking censuses in the 1930s.Today,about 380 remain. In the fall, whooping cranes are supposed to migrate south. However, many of them don't know how. "With so few birds left, young whooping cranes typically don't have parents around to teach them," explains pilot Joe Duff. That's where the trikes come in. Each October, pilots dress up as whooping cranes and take to the skies in Wisconsin. The young birds follow them because they think the trikes are big whooping cranes. It takes about three months to reach south--with plenty of rest stops on the way. The pilots lead the cranes to refuges, or protected areas, in Florida. This spring, the birds will migrate north by themselves--no trikes needed! "It's nice because you know the birds are going to make it," Duff told WR News. It can be inferred from the passage that .
[ "the aircraft make a great difference to the cranes", "the aircraft don't have an effect on the cranes", "the cranes get lost frequently", "the cranes fly to Florida nonstop" ]
A. the aircraft make a great difference to the cranes
mmlu_train
aquarat_50202
The monthly rent of a shop of dimension 10feet × 10feet is Rs.1300. What is the annual rent per square foot of the shop?
[ "43", "156", "68", "87", "92" ]
B. 156
aquarat
mmlu_train_4824
How do coal and the sun compare as sources of energy?
[ "Coal is renewable, and the sun is renewable.", "Coal is renewable, and the sun is nonrenewable.", "Coal is nonrenewable, and the sun is renewable.", "Coal is nonrenewable, and the sun is nonrenewable." ]
C. Coal is nonrenewable, and the sun is renewable.
mmlu_train
arc_easy_2080
When a red bull (RR) is bred with a white cow (WW), a roan calf (RW) is sometimes produced. If a roan bull (RW) is bred with a roan cow (RW), what is the most likely outcome of the offspring?
[ "1 red, 1 white, and 2 roan", "0 red, 1 white, and 3 roan", "2 red, 2 white, and 0 roan", "0 red, 0 white, and 4 roan" ]
A. 1 red, 1 white, and 2 roan
arc_easy
mmlu_train_66967
Scientists can determine someone's favorite food from their shape. They have discovered that the arrangement of taste buds on the tongue varies for different body types. The scientist team examined 1,000 British adults and divided them into three physiologically recognized body types--ectomorphs, endomorphs mesomorphs. They determined that a person's body type indicated where they were likely to have the most taste buds - on the sweet, bitter or salty areas of their tongues. The study showed that ectomorphs, who make up one in three of the population, usually have a small delicate shape, have a sweet tooth but hate bitter foods. Mesomorphs, who make up 20percent of the population, usually have a muscular shape and prefer salty and bitter foods but dislike sweet foods. Half the British population are endomorphs with soft, rounded bodies, and they like most foods. The findings showed that for two in three people food preference was a physiological rather than a psychological choice. Body shape expert Simon Bradshaw, who takes change of his team, said, "It appears that simply by looking at a person's body shape we can make sure about their taste preferences." But Catherine Collins, of the British Dietetic Association said, "It is difficult to tell whether our body shape dictates the food we like, or the food we like dictates body shape. _ people who prefer most types of foods will be fatter and people who are the endomorph shape tend to find it more difficult to lose weight." It is implied that _ .
[ "there are only three body types", "ectomorphs enjoy most foods", "Catherine Collins is an expert in body shape", "people who enjoy most foods have trouble in losing weight" ]
D. people who enjoy most foods have trouble in losing weight
mmlu_train
mmlu_train_1313
A geologist found fossils of horse bones in different rock layers of a canyon. The fossils in the lower levels show shorter bones than those in the upper-level fossils. Which conclusion is based on the geologist's observations?
[ "Horse's reproduce using two parents.", "Horse's became larger over time.", "Smaller Horse's went extinct, and then larger Horse's formed.", "Smaller Horse's are better suited to the environment than larger Horse's." ]
B. Horse's became larger over time.
mmlu_train
aquarat_14315
If the number a60,858,61b is evenly divisible by 88, what are the values of a and b?
[ "b = 6, a = 6", "b = 2, a = 3", "b = 2, a = 1", "b = 4, a = 6", "b = 4, a = 3" ]
A. b = 6, a = 6
aquarat
mmlu_train_59868
As skies are filled with millions of migrating birds, European scientists say the seasonal wonder appears to be strange: The fatter the bird, tile better it flies. The results of their study led to a theory opposite to a central one of aerodynamics , which says that the power needed to fly increases with weight. For birds, obviously, the cost of flying with heavy fat is much smaller than we used to think. Researchers found that red knot wading birds double their normal body weight of 100 grams before making their twice-a-year nonstop flight between the British Isles and the Russian Arctic. Distance: 5,000 kilometers. Another study in the magazine Nature measured the advantage of flying in an aerodynamic group which allows birds to save energy by flying smoothly and quietly in the lead bird' s air stream. Flying in groups, their heart rates were 14.5 percent lower than flying alone, according to Henri, a French scientist. The findings help explain how birds complete difficult migrations. Researchers had thought that thinner, stronger birds would have the best chance to survive. The first study suggests that building up fat to be burnt as fuel during the migration is worth more than the energy it takes to carry the additional weight. In the study, researchers said their team studied the birds flown at different body weights during 28 simulated flights. They forced a small amount of special water into the birds' bodies so that they could measure the amount of energy burnt during the flight. A _ red knot wading bird has a better chance to survive during its migrating flight.
[ "stronger", "weaker", "thinner", "fatter" ]
D. fatter
mmlu_train
mmlu_train_15054
The human body is an amazing and complex machine. It is very tough, and we usually recover from illness or injury on our own, without the help of a doctor. But what happens when we need medical treatment? In the past, some people went to a clinic or hospital to see a medical doctor. Other people trusted ancient traditions and chose treatments such as herbal medicine or acupuncture . These two types of medicine----one modern and Western and the other ancient and Eastern----used to have nothing to do with each other. In recent years, however, people around the world have begun to recognize and accept both modern medical science and more traditional therapies. This new kind of medicine can be called integrative medicine (because it integrates, or combines, different types of medicine), or complementary medicine. Some of the principles of this type of medicine include preventing illness by helping people stay healthy, integrating different types of therapies according to the needs of each patient, and considering the health of the whole person rather than concentrating on a particular illness or injury. One health maintenance organization (HMO) in Madison, Wisconsin, has opened its Complementary Medicine and Wellness Center. At the center, HMO members are offered a variety of services. If you are suffering a sore back, try some massage treatments to relax your muscles and encourage the flow of healing energy in your body. If you have allergies or asthma, you could try homeopathy, which uses tiny amounts of allergens to stimulate your body's natural immune response. And if you're not ill, but just want to improve your strength and focus your mind, try a tai chi or yoga class. Patients who use these complementary medicine services appreciate having an alternative to surgery or to drugs and their side effects. They also enjoy activities and therapies that make them feel better even if they're not sick. And from the financial point of view of the HMO, preventing illness whenever possible is much less expensive than a hospital stay. According to Dr. Andrew Weil, founder of the Program in Integrative Medicine at the University of Arizona, integrative medicine combines the best parts of Western medicine with complementary therapies such as acupuncture and nutrition. And because both doctor and patient are working to prevent illness, they become partners with the same goal instead of strangers who see each other only when the patient is sick. The article is about _ .
[ "Western medicine", "acupuncture and herbal medicine", "advances in medical technology", "integrative medicine" ]
D. integrative medicine
mmlu_train
mmlu_train_21252
School of Cinema and Performing Arts It offers two two-week sessions and one three-week session during the summer. Your teen can participate in the filmmaking, acting, dance, photography programs. He will work with professionals who will teach him the latest technology through hands-on experience. Tuition includes day trips to amusement parks and other Los Angeles tourism sites. Housing and food can be arranged in dorms for an additional fee. Address: 1600 Campus Road, Los Angeles Tel: 800-718-2787 iD Tech Camps at UCLA It offers computer and gaming related camps at the UCLA campus. Teens can join in day camps, overnight camps or weekend gaming camps. Your teen will use the latest technology available to learn video game design, web design and computer programming. Overnight campers will stay in the college dorms. Address: 405 Hilgard Ave, Los Angeles Tel: 888-709-8324 Summer Discovery at UCLA It offers three or six week residential camps at the UCLA campus. Three-week courses can include academic or art classes for enrichment purposes. In this summer camp, your teen will get a taste of what to expect when she enters college. She can choose from sports management, business management, healthy lifestyle programs, ESL-TOEFL programs and more. Address: 405 Hilgard Ave, Los Angeles Tel: 516-621-3939 Power Chord Academy It offers a seven-day course that caters to residential or day teens, as well as a three-day course. Teens will meet a touring band, learn technical aspects about the music industry and being a musician in current times, write songs, perform concerts, make a music video, record a CD and meet a touring band. No experience or musical background is necessary. Address: 7336 Santa Monica Blvd, Los Angeles Tel: 800-897-6677 What do the four camps have in common?
[ "They lie on the same business area.", "All of them provide accommodation.", "Teens can go to amusement parks for free.", "They have latest technology during each session." ]
B. All of them provide accommodation.
mmlu_train
arc_easy_1220
The flower petals of a hydrangea plant change color as the acidity of the soil changes. The color changes are directly related to which factor?
[ "gravitropism", "photosynthesis", "geographic location", "environmental conditions" ]
D. environmental conditions
arc_easy
mmlu_train_42993
Older people who have low expectations for a satisfying future may be more likely to live longer, healthier lives than those who see brighter days ahead, according to new research "Our findings showed that being overly optimistic in predicting a better future was associated with a greater risk of disability and death within the following decade," said Frieder R. Lang, the leading researcher of the University of Erlangen-Nuremberg in Germany." Pessimism about the future may encourage people to live more carefully, taking health and safety measures." Lang and colleagues examined data collected from 1993 to 2003 for the national German Socio-Economic Panel, an annual survey on approximately 40,000 people from 18 to 96 years old. The researchers divided the data according to age groups: 18 to 39 years old, 40 to 64 years old and 65 years old and above. Through mostly in-person interviews, the participants were asked to rate how satisfied they were with their lives and how satisfied they thought they would be in five years. Five years after the first interview, 43 percent of the oldest group had underestimated their future life satisfaction, 25 percent had predicted accurately and 32 percent had overestimated , according to the study. The researchers calculated that each increase in overestimating future life satisfaction was related to a 9.5 -percent increase in reporting disabilities and a 10- percent increase in risk of death. Because a darker outlook on the future is often more realistic, older adults' predictions of their future satisfaction may be more accurate, according to the study. In contrast, the youngest group had the sunniest outlook. "We argue, though, that the analysis may depend on age and available resources. These findings shed new light on how our perspectives can either help us take action or prevent us from taking action that can help improve our chances of a long, healthy life," Lang said. According to the study, older people predicted their life satisfaction more accurately because _ .
[ "they demanded less materially", "they were more satisfied with their lives", "they had a deeper insight into life", "their outlook on the future was more realistic" ]
D. their outlook on the future was more realistic
mmlu_train
mmlu_train_99810
Over your head is dark though it is only afternoon on a summer's day. Lacking an eclipse of the sun, a viable reason for this darkness is
[ "the sky lacks clouds", "the sun is shining", "its about to storm", "clouds are completely absent" ]
C. its about to storm
mmlu_train
arc_easy_1472
A small, fast-moving river in is in a V-shaped valley on the slope of a mountain. If you follow the river to where it passes through a plain, what will the river most likely look like compared with how it looked on the mountain?
[ "Much the same", "Deeper and faster", "Slower and wider", "Straighter" ]
C. Slower and wider
arc_easy
arc_challenge_773
Mr. Pratt does a science demonstration. He inflates a balloon, places it in a freezer, and then removes it after 10 minutes. Which best describes the balloon's volume when in the freezer and then after being removed and allowed to warm up?
[ "expands in the freezer and then contracts as it gets warmer again", "contracts in the freezer and then expands as it gets warmer again", "expands in the freezer and then keeps that volume when warmed up", "contracts in the freezer and then keeps that volume when warmed up" ]
B. contracts in the freezer and then expands as it gets warmer again
arc_challenge
mmlu_train_65574
It's 5:00 in the morning when the alarm rings in my ears. I roll out of bed and walk blindly through the dark into the bathroom. I turn on the light and put on my glasses. The house is still as I walk downstairs while my husband and three kids sleep peacefully. Usually I go for a long run, but today I choose my favorite exercise DVD, Insanity. Sweat pours down my face and into my eyes. My heart races as I face my body to finish each movement. As I near the end of the exercise ,I feel extremely tired, but a smile is of my face. It's a smile because the DVD is over , but a smile of success from pushing my body to its extreme limit. Some people enjoy shopping, smoking , food, work, or even chocolate. But I need exercise to get through each day. Some shake heads when they see me run through the town. Others get hurt when I refuse to try just one bite of their grandmother's chocolate cake. They raise their eyebrows, surprised by my "no thank you," or by my choice to have a salad. Over the years , I have learned it's okay to just say "no." I shouldn't feel sorry for refusing food that I don't want to eat. So what drives me to roll out of bed at 5:00 a.m.? What gives me the reason to just say no to ice cream? _ t. A commitment to change my life with a way that reduces daily anxiety, increases self -confidence and energy, extends life and above all improves my body shape. This is the point where a smile appears on my face as I look at myself in the mirror or try on my favorite pair of jeans that now fit just right. It's through commitment and sweat that I can make a difference within myself inside and out. Why is there a smile on the author's face in the morning?
[ "Because she sees her family sleeping peacefully.", "Because she finishes her favorite exercise", "Because she enjoys the interesting DVD", "Because she feels a sense of achievement" ]
D. Because she feels a sense of achievement
mmlu_train
aquarat_38266
In how many ways a committee consisting of 3 men and 2 women can be formed from 4 men and 3 women?
[ "10", "15", "20", "18", "21" ]
A. 10
aquarat
mmlu_train_16587
Studies show farmland in Africa is often lacking in important nutrients. But researchers say combining different farming methods may help. Since the world food crisis several years ago, researchers have directed more of their attention to small farms. Most farms in areas south of the Sahara Desert are only about one or two hectares. One of the goals is to increase production without necessarily clearing more land to grow additional crops. American researchers say that can happen with greater use of an agricultural system called perennation. It mixes food crops with trees and perennial plants - those that return year after year. Mr. Reganold, who is with Washington State University, says poor soil may have resulted from years of weathering that washed away many nutrients. He says some farmers may have done more harm than good. He estimates that up to two billion dollars worth of nitrogen, phosphorous and potassium is lost from African soil each year. The scientist says the word perennation defines three systems that are already used in Africa. The oldest of the three is called evergreen agriculture. This is where farmers plant trees with their crops. John Reganold says farmers in Africa have been doing this for sixty years, but it seems to be growing in popularity. The method is gaining widespread use in countries such as Niger, Burkina Faso, Malawi and Zambia. The trees are planted among maize, millet or sorghum crops. They not only add nitrogen to the soil through their roots, but also through their leaves when they fall off and break down. At other times of the year, the trees can protect plants from strong sunlight. Mr. Reganold was one of three researchers who wrote a report about perennation. It was published in the journal Nature. Farmland in Africa _ .
[ "is often small in size", "can produce more than enough crops for Africans", "is short of important nutrients", "has got the attention of scientists around the world" ]
C. is short of important nutrients
mmlu_train
mmlu_train_96106
If a bird is green, another bird can realize that by
[ "noticing it", "visiting it", "touching it", "killing it" ]
A. noticing it
mmlu_train
aquarat_12302
There are two pipes which are functioning simultaneouly to fill a tank in 12 hours, if one pipe fills the tank 10 hours faster than other then how many hours second pipe will take to fill the tank ?
[ "30 hours", "35 hours", "40 hours", "42 hours", "41 hours" ]
A. 30 hours
aquarat
arc_easy_564
As a sample of water turns to ice,
[ "new molecules are formed.", "the mass of the sample is increased.", "the arrangement of the molecules changes.", "energy is absorbed by the molecules." ]
C. the arrangement of the molecules changes.
arc_easy
mmlu_train_21581
Surfing for hours on the Internet consumes a lot of electricity and is harmful to the environment. However, a new ecological PC saves energy as it operates:it produces about 70 percent less CO2than conventional computers. As a work tool, a leisure activity resource, and a personal assistant, computers seem to be everywhere. Yet the environmental performance for today's computers leaves a lot to be improved: they rapidly become out of date, and typically contain poisonous materials and individual parts that are difficult to recycle. Moreover, they consume plenty of power whose production, in return, causes the release of CO2into the atmosphere. Employees at the MicroPro Company in Ireland, teaming with colleagues at the Fraunhofer Institute for Reliability and Microintegration IZM in Berlin, have engineered a wooden--frame computer with reduced environment impact. As the first computer for its class, the"iameco"(pronounced I-am-eco) was awarded the "EU Ecolabel", the European Union's environmental label. "This touch-screen PC has very low energy consumption over the entire lifecycle" explains Alexander Schlosser, scientist at IZM. Over the full product life cycle, it releases 70 percent less CO2than a typical desktop PC with monitor. In addition, it can be easily recycled. Of the materials used, 98 percent can be recycled. Indeed, 20 percent of the computer can be reused immediately--in other words, many parts can be reused for repairing other computers--such as parts of the wooden frame. The wooden frame is used because _ .
[ "it has better appearance", "it can reduce weight", "it doesn't break easily", "it can be recycled directly" ]
D. it can be recycled directly
mmlu_train
mmlu_train_88521
The Real Chinese Food In China, there're many different kinds of food. Some of them are very popular. Dumplings are the real Chinese food. Now let's talk about them, OK? Everyone in China likes dumplings very much, and there are many different kinds of dumplings. Some have meat and vegetables in them, others have sugar( ), eggs and so on. I like dumplings with vegetables and pork best. Usually people make dumplings at home. If you have no time to make them, you can buy them in any supermarkets. Then you take them home and eat them with _ The Spring Festival is very important in China. When it comes, we make dumplings, usually we put a coin ( ) in a dumpling. If one eats the dumpling with the coin in it, he will be lucky in the year. Now tell me, do you like dumplings? Welcome to China, we'll ask you to eat the real Chinese food: dumplings. You can buy dumplings in a supermarket when _ .
[ "you have time", "you are happy", "you are busy", "you are hungry" ]
C. you are busy
mmlu_train
mmlu_train_98142
An element from the periodic table is used to transfer
[ "light", "sound", "air", "voltage" ]
D. voltage
mmlu_train
arc_easy_1732
Which type of energy conversion occurs in a flashlight?
[ "chemical to light", "mechanical to light", "electrical to chemical", "mechanical to chemical" ]
A. chemical to light
arc_easy
aquarat_9109
The value of x + x(xx) when x = 3
[ "A) 30", "B) 36", "C) 38", "D) 36", "E) 64" ]
A. A) 30
aquarat
arc_challenge_1038
Vegetables can be scientifically classified by all of these except
[ "size.", "color.", "shape of plant parts.", "whether they taste good." ]
D. whether they taste good.
arc_challenge
mmlu_train_48423
The Ministry of Health has called for more awareness from the public on the mental health of the young,as part of efforts to mark World Mental Health Day. More than 15 percent of the Chinese youth have been found with mental problems,and about 30 million young people under 17 are suffering from depression,the Shanghai-based Wenhui Daily reported. The World Health Organization estimated that before 2020,the rate of children with mental problems will increase to 50 percent,and mental problems will become a major factor behind death and illness in the young worldwide. Deng Xiaohong,the spokesperson for the Beijing Municipal Health Bureau,said rapid social change is one of the reasons behind the rising number of youngsters with psychological problems. If these mental diseases are not _ on time,occurrence of crime,drugtaking and other dangerous behavior are expected to rise. Experts said mental disease could be caused by many factors,such as the inability to handle interpersonal relations well,unstable emotions and pressure from the overload of study. A number of experts have also said the one-child policy is another reason leading to poor mental health in the young. Children were said to be too "spoiled" and "selfish" in one-child families. Schools in many cities were reported to roll out measures to help students maintain their mental well-being. Yin Jingmiao,a teacher of the Beijing No. 105 Middle School,told China Daily that the school invites psychologists to provide counseling to students three times a month. "Students can be arranged to have 40-minute counseling sessions," Yin said. The school also gives lectures on mental health to senior grade students before they take the national college entrance exams,to help ease any anxiety arising from the tests. Which of the following statements is true according to the passage?
[ "By 2020,about 50 percent of the students in China will have mental problems.", "Mental problems mainly appear among the youth while they are seldom seen among adults.", "China has the largest number of youngsters with psychological problems.", "Many schools have realized the problem and taken measures." ]
D. Many schools have realized the problem and taken measures.
mmlu_train
mmlu_train_1977
Students dropped different rocks into sand to simulate meteorite impacts. Their goal was to determine which rock made the deepest crater. Which variable should the students control in order to have the most accurate results?
[ "the height from which the rocks are dropped", "the average time it takes the rocks to fall", "the density of the rocks", "the mass of the rocks" ]
A. the height from which the rocks are dropped
mmlu_train
arc_challenge_937
A small ice cube at a temperature of 0°C is dropped into a glass of water at 28°C and melts. What is the temperature of the water in the glass just after the ice cube melts?
[ "0°C", "between 0°C and 28°C", "28°C", "greater than 28°C" ]
B. between 0°C and 28°C
arc_challenge
mmlu_train_92829
Which property of Earth's interior keeps the innermost part in a solid state?
[ "relatively low temperature", "extremely high pressure", "high rate of heat flow", "low rate of radioactive decay" ]
B. extremely high pressure
mmlu_train
mmlu_train_4596
Animals get energy for growth and repair from
[ "soil", "food", "water", "air" ]
B. food
mmlu_train
aquarat_45030
If x, y, and z are consecutive odd integers, with x < y < z, then which of the following must be true? I. y-x is even II. (z-x)/y is an integer III. xz is even
[ "I only", "II only", "III only", "I and II only", "I, II, and III" ]
A. I only
aquarat
aquarat_45136
One night 18 percent of the female officers on a police force were on duty. If 180 officers were on duty that night and half of these were female officers, how many female officers were on the police force?
[ "90", "180", "270", "500", "1,000" ]
D. 500
aquarat
mmlu_train_9701
Targeting teens Using the Web makes teens a target. Posting too much personal information for those millions of cyber eyes to see can cause some big problems and can even invite a threat to your life. As Mary learned, not everyone on the Internet is who he or she says they are. Adults will sometimes pose as other teens, posting fake photos and nice messages to gain trust. They use their fake identity to access the personal information of others, such as home address, phone number, or school name. "That's not the most common scenario ", says David Finkelhor, a sociology professor at the University of New Hampshire. "Only 3 percent of teens aged 10 to 18 who use the Internet report being asked to meet offline. But the danger is real. Safety measures Mary's My Space profile is set to "private", which means that only the people she adds under the "friend" category can access her page. She also doesn't have any pictures of herself on her site. The only self-identifying material she has posted is her name, grade, and a list of hobbies. "People can only add me if they know my last name or my e-mail, "Mary says. " I don't want random people to see my profile. I just go online to talk to my friends." Stay safe and have fun online Experts say almost 90 percent of U.S. teens are online. But not everyone knows how to surf the Web in a smart way. With these tips, you can have fun, stay safe, and avoid embarrassment! Pick a safe password. Make sure your password is something that other people won't be able to guess. Use numbers in between letters. "spar123ky" is better than "sparky 123." Pick a safe username. Make sure yours doesn't say too much about you, "Happygirl13" is better than "AliceWaters13." Don't include your name, age, or where you are from. Never tell a stranger your name, school, address, age, birthday, phone number, or friends' names. Who is most likely to be a victim online?
[ "A liar.", "A teenager.", "A stranger.", "An honest person." ]
B. A teenager.
mmlu_train
mmlu_train_70991
Peter is a sixth-grader at Woodland Primary School. He is only 12 years old but has been smoking for three years. John, 15, is a Junior 2 student at Woodland Secondary School. He began smoking four years ago. "Smoking is part of my life," John said. Peter and John are not those boys' real names. But their problem, smoking, is a very real problem. In many countries, smoking is becoming a bigger problem for young people. Most smokers start in their teens or earlier. A study of 8,000 London students shows that smoking is a problem for many British kids. More than 21% of middle school students and 6% of primary school pupils said they smoked. "If young people start smoking early, it will be very hard for them to give up later on," said a professor. Every year, about four million people die because of smoking. And if people keep smoking that number will go up to about ten million a year by 2030 the World Health Organization (WTO) says. So we have to learn and tell others about dangers of smoking. ,. The sentence "Smoking is part of my life" probably means " _ "
[ "I don't smoke very often.", "Smoking is very important to me.", "I don't smoke at all.", "I'm going to give up smoking." ]
B. Smoking is very important to me.
mmlu_train
mmlu_train_70534
We live in the computer age. People use computers to do much of their work. But few people know how to look after them. Remember the following when you use your computer: 1.Keep your computer in a cool, dry room. Too much or too little heat is bad for computers. Damp is also bad for them. 2.Do not let people smoke near your computer. Smoke of all kinds is very bad for many parts of a computer. 3.Do not eat or drink when you are near your computer. Pieces of food and a little water in the keyboard are also bad for a computer. 4.Keep your screen clean and do not have it too bright. They are bad for your eyes. Make sure the screen is not too far from or too near your eyes. Some people use different glasses to protect their eyes when they use a computer. A dirty screen or a very bright screen is _ for your eyes.
[ "bad", "good", "useful", "helpful" ]
A. bad
mmlu_train
mmlu_train_9198
Some trees can survive a long time without water. Think of trees that grow in the desert. But other trees may need more moisture than they can get from rainfall or from the air . Trees and other plants can look thirsty. Leaves can become weak and hang downward. They can also turn yellow. Yellowing can be a sign of too much water. But it can also be a warning sign of too little water. With a newly planted tree, the roots have not yet spread out from the root ball. The root ball can become dry faster than the dirt around it. So put water on the area of the root ball and the surrounding soil until the roots become established. Once a tree is well established, water deeply instead of watering often. The amount of water needed depends on the tree and the soil. Clay soils hold water for longer periods while sandy soil holds less water. During the hottest season, a deep watering may satisfy a tree for anywhere from ten days to four weeks. Ted Swiecki is a plant scientist . He says people should not water established trees at the base of the trunk . This can harm the tree. Too much water in the soil at the base of a tree can lead to the growth of fungi . If the area is too wet, harmful organisms have a better chance to invade the tree and cause disease. Mr. Swiecki says this is true especially in Mediterranean and semi-dry climates. Many trees in these climates have adapted to having a dry area near their base during the hottest season. He said, "Water displaces (,)air in the soil. And roots are aerobic ; they require oxygen for the soil to function properly. So if you keep the soil completely wet and there's no air there, then the roots are starving for oxygen." Which of the following situations requires the most watering?
[ "Newly planted trees in sandy soil", "Newly planted trees in clay soil", "Well-established trees in clay soil", "Well-established trees in sandy soil" ]
A. Newly planted trees in sandy soil
mmlu_train
mmlu_train_50010
Riding School: You can start horse-riding at any age. Choose private or group lessons any weekday between 9 a. m.and 8:30 p.m.(3:30 p.m.on Saturdays). There are 10 kilometers of tracks and paths for leisurely rides across farmland and open country. You will need a riding hat. Opening Hours: Monday through Friday:9:00 a.m.--8:30 p.m. Phone:( 412)396--6644 FaxL412) 396-6752 Sailing Club: Our Young Sailor's Course leads to the Stage 1 Sailing qualification. You'll learn how to sail safely and the course also covers sailing theory and first aid. Have fun with other course member, afterwards in the clubroom. There are 10 weekly two-hour lessons (Tuesday 6:00 p.m--8:00p.m) Opening Hours:Tuesdays:6:00p.m--8:00 p.m. Phone: (412)396--6644 Fax: (412)396--6644 Diving Center: Our experienced instructors offer one-month courses in deep-sea diving for beginners. There are two evening lessons a week, in which you learn to breathe underwater and use the equipment safely. You only need a swimming costume and towel. Reduced rates for couples. Opening Hours: Monday and Friday:6:30p.m-8:30p.m. Phone: (412)396-6312 Fax: (412)396-6706 Medical Center: The staff of the Medical Center aim to provide convenient and comprehensive medical care to students and staff of the university. The center is well equipped and the staff here are trained to deal with a broad range of medical problems. Both female and male doctors as well as nursing staff are available for consultation. Also, all kinds of medicines are sold here and are cheaper for students than other drugstores. Opening Hours: 24 hours from Monday to Sunday Phone:(412)396--6649 Fax:(412) 396--6648 Watersports Club: We use a two-kilometer length of river for speedboat racing and water-skiing.A beginners' course consists of ten 20-minute lessons. You will learn to handle boats safely and confidently, but must be able to swim. The club is in a convenient central position and is open daily from 9 a. m to 4 p.m, with lessons all through the day. Opening Hours: Monday through Friday: 9:00a.m.--4:00 p.m. Phone: (412)39606899 Fax: (412) 396-6890 Which is NOT the convenience that the Medical Center provides?
[ "Well trained staff members.", "Good equipment.", "Nursery for newly-born babies.", "Various less expensive medicines." ]
C. Nursery for newly-born babies.
mmlu_train
mmlu_train_27066
Not all vegetables need lots of sunshine. Mark Hoffman and his wife own a bed-and-breakfast guesthouse in rural Kempton, Illinois. They often serve their guests fresh products from the garden. The Hoffmans have been growing food and flowers for twenty-five years. For almost ten of those years, Mr. Hoffman has been experimenting and working with shade plantings. He says, "The bottom line here is that most plants will produce more in full sun. But if you do not have full sun, there are other choices." For example, he grows tomatoes near oak trees. Oak trees can produce a lot of shade. But Mr. Hoffman says his tomato plants grow as long as they get five hours' direct sunshine a day, especially morning sun. Not only does this go against the traditional advice that tomatoes need six, eight, even twelve hours' full sun a day. It also shows how plants and tree roots can share nutrients and water. Mr. Hoffman says plants with wider leaves seem to do better in shady environments. He also found that his potatoes did better partly in shade than in full sun. Moving them out of the sun helped control an insect problem. Mr. Hoffman does not use pesticide . Instead, he planted the potatoes in the shade, especially on the east side of the tree. The potatoes get morning sun, but they are shaded during the hottest part of the day. Some insects dislike shade, and the hottest part day is when they do the worst of their damage. Time of day, sun intensity , shadows from trees, walls and buildings all influence how much sunlight falls on plants. And people interested in shade planting should also remember something else. The term "shade" can describe different amounts of darkness. It can even mean different things in different parts of the world. From the passage we can know that _ .
[ "plants with wider leaves produce more in full sun.", "as a matter of fact, plants don't need to grow in full sun.", "the more sunshine plants get, the more they will produce", "plants with wider leaves grow better in shadows" ]
D. plants with wider leaves grow better in shadows
mmlu_train
aquarat_23908
Bank account A contains exactly x dollars, an amount that will decrease by 10% each month for the next two months. Bank account B contains exactly y dollars, an amount that will increase by 20% each month for the next two months. If A and B contain the same amount at the end of two months, what is the ratio of x√x to y√y?
[ "4 : 3", "3 : 2", "16 : 9", "2 : 1", "9 : 4" ]
A. 4 : 3
aquarat
aquarat_31243
9 men are equal to as many women as are equal to 7 boys. All of them earn Rs.216 only. Men’s wages are?
[ "6", "5", "2", "8", "2" ]
D. 8
aquarat
arc_easy_1386
Quartz and feldspar are two common minerals. When they are found mixed together in nature they form
[ "rocks.", "magma.", "soil deposits.", "organic material." ]
A. rocks.
arc_easy
mmlu_train_37489
Almost everyone stood when the bride walked down the aisle in her white dress,but not the wedding conductor,because she was fixed on her chair. The wedding was led by "IFairy",a 1.5meter tall seated robot with flashing eyes and plastic hair. Sunday's wedding was the first time a marriage had been led by a robot,according to manufacturer,Kokoro Co. "Please lift the bride's veil ," the robot said in a tinny voice,waving its arms in the air as the newlymarried couple kissed in front of about 50 guests. The wedding took place at a restaurant in Hibiya Park in central Tokyo,where the IFairy wore flowers and directed a rooftop ceremony. Wires led out from beneath it to a black curtain a few feet away,where a man clicked commands into a computer. Japan has one of the most advanced robotics industries in the world,with the government actively supporting the field for future growth. Industrial models in factories are now standard,but recently Japanese companies have been making a push to inject robots into everyday life. Honda makes a walking childshaped robot,and other firms have developed robots to entertain the elderly or play baseball. Kokoro,whose corporate goal is to "touch the hearts of the people",also makes giant dinosaur robots for exhibitions and lifelike Android models that can smile and laugh. The company is a subcompany of Sanrio Co.,which owns the rights to Hello Kitty and other Japanese characters. "This was a lot of fun. I think that Japanese people have a strong sense that robots are our friends. Those in the robot industry mostly understand this,but people mainly want robots near them to serve some purpose," said the bride,Satoko Inoue,36,who works at Kokoro. The IFairy sells for about 6.3 million yen ($68,000) and three are in use in Singapore,the US and Japan,according to company spokeswoman,Kayako Kido. What do people mainly expect robots to do?
[ "Act as a sign of technology development.", "Be their friends.", "Touch the hearts of people.", "Meet their own requirements." ]
D. Meet their own requirements.
mmlu_train
aquarat_11662
A rabbit on a controlled diet is fed daily 300 grams of a mixture of two foods, food X and food Y. Food X contains 10% protein and food Y contains 15% protein. If the rabbit's diet provides exactly 39 grams of protein daily, how many grams of food X are in the mixture.
[ "120", "140", "150", "160", "200" ]
A. 120
aquarat
mmlu_train_35896
Many people may not believe it, but this is what is happening: polar bears are dying out! They are dying because they are losing a great deal of habitat due to human incursion and global warming. They are dying because of starvation as well. With the sea ice they depend on for survival shrinking, it is becoming increasingly difficult for them to find food. An ecosystem is highly dependent on all of its parts, and removing even a single species can result in serious consequences. Polar bears are at the top of the predators where they live. They play an important part in the ecosystem. They feed on seals, fish and deer. Several other animals depend on the kill of polar bears. The failure to save polar bears might result in loss of these predators. In addition, all large predators perform a very important function in their habitat: helping to control the populations of other species. When an animal group loses its natural predators, its population will rise rapidly, having a direct result in population decrease of other groups. A huge boom in population of Arctic seals would have a direct effect on the prey of seals, and could reduce numbers of certain types of fish. This could also have a direct effect on humans, who might have to compete with Arctic seals for food supplies from fish. Lack of polar bears could eventually affect human food supply. Human beings shall save polar bears to ensure the food supply. There is no doubt that we should save polar bears. However, there is still another question: can they be saved? This is a matter that scientists debate because of rapid degradation of the polar bear' environment in recent years due to warming temperatures. It is estimated that if the bears cannot adapt to changing climates, they might die out before the end of the 21stcentury, with about 50% of the animals disappearing by 2050. So time is running out! There are some things that may help slow down global warming and help delay extinction of polar bears. These include finding new energy sources that don't give off greenhouse gases and not making any more incursions into polar bear's territory. Which is NOT the threat to the survival of polar bears according to the passage?
[ "Human's killing.", "Global warming.", "Habitat loss.", "Lack of food." ]
A. Human's killing.
mmlu_train
mmlu_train_96100
What eat other animals?
[ "herbivores", "bacteria", "flesh eaters", "giraffes" ]
C. flesh eaters
mmlu_train